Quantifiler observations of relevance to forensic casework

The Quantifiler (QF) kit is regularly used by forensic scientists for DNA quantitation. We performed in-house validation studies which revealed some interesting observations. The QF standard displayed a two-fold difference between two different lot numbers which suggests that every standard should be tested prior to use. The Promega K562 DNA standard works well with the QF kit. c. 41% of samples that inhibited the internal PCR control (IPC) system within the QF kit still produced good Profiler Plus reactions. QIAquick was effective at removing inhibitors. The presence of dyes within casework samples were observed not to inhibit QF amplifications. Template DNA greater than 100 ng/muL appeared to inhibit the IPC. Close to identical concentration results were obtained when alternative analysis settings were used. These validation findings will assist DNA processes involved in forensic casework.     

Development of the supernormality scale-revised and its relationship with psychopathy

Abstract:  The current research addresses the psychometric and diagnostic qualities of the Supernormality Scale-Revised (SS-R), a self-report measurement. Supernormality is defined as the tendency to systematically deny the presence of common symptoms (e.g., intrusive thoughts). In study 1, the SS-R was administered to forensic patients ( n  = 63), psychiatric patients ( n  = 26), honestly responding students ( n  = 26), and students instructed to fake supernormality ( n  = 20). Findings indicated good test–retest stability, and adequate internal consistency. Furthermore, the SS-R showed overall good predictive and convergent validity. Moreover, the diagnostic accuracy was excellent (sensitivity and specificity being 0.80 and 0.92, respectively). In study 2, 115 (healthy) controls and 32 forensic patients completed the SS-R and the Psychopathic Personality Inventory (PPI) ( J Pers Assess 1996; 66 :488), an instrument measuring psychopathy. Results showed again that the SS-R is a reliable and valid instrument. However, supernormality was not related to psychopathy as measured by the PPI.     

Demoted leaders and exiled candidates: Disentangling party and person in the voter’s mind

The debate on personalization in electoral politics is inconclusive. There is confusion about the concept of personalization. Moreover, the fact that party evaluation and person evaluation are interrelated complicates the debate. This paper focuses on the latter problem by employing counterfactual thought experiments in which voters are asked to simulate their vote with their candidate lower on the party list or nominated by another party. The results show that most voters put party above person and less than ten percent put person above party. A sizeable third category has a preference for an individual candidate as long as that candidate does not leave the party. Also, personalization is slightly more important with regard to (the leaders of) populist parties, and individual candidates are more important for voters with less education, less political knowledge and a less deeply rooted party preference.     

The Co-development of Friends’ Delinquency with Adolescents’ Delinquency and Short-term Mindsets: The Moderating Role of Co-Offending

Journal of Youth and Adolescence - The companions in crime hypothesis suggests that co-offending moderates the link between peer delinquency and adolescent delinquency. However, this hypothesis has...     

The Forensic Confirmation Bias: A Comparison Between Experts and Novices

A large body of research has described the influence of context information on forensic decision‐making. In this study, we examined the effect of context information on the search for and selection of traces by students (N = 36) and crime scene investigators (N = 58). Participants investigated an ambiguous mock crime scene and received prior information indicating suicide, a violent death or no information. Participants described their impression of the scene and wrote down which traces they wanted to secure. Results showed that context information impacted first impression of the scene and crime scene behavior, namely number of traces secured. Participants in the murder condition secured most traces. Furthermore, the students secured more crime‐related traces. Students were more confident in their first impression. This study does not indicate that experts outperform novices. We therefore argue for proper training on cognitive processes as an integral part of all forensic education.     

Learning on the job: Studying expertise in residential burglars using virtual environments*

In this article, we describe a quasi‐experiment in which experienced incarcerated burglars (n = 56), other offenders (n = 50), and nonoffenders (n = 55) undertook a mock burglary within a virtual neighborhood. We draw from the cognitive psychology literature on expertise and apply it to offending behavior, demonstrating synergy with rational choice perspectives, yet extending them in several respects. Our principal goal was to carry out the first robust test of expertise in offenders by having these groups undertake a burglary in a fully fledged reenactment of a crime in a virtual environment. Our findings indicate that the virtual environment successfully reinstated the context of the crime showing clear differences in the decision making of burglars compared with other groups in ways commensurate with expertise in other behavioral domains. Specifically, burglars scoped the neighborhood more thoroughly, spent more time in the high‐value areas of the crime scene while traveling less distance there, and targeted different goods from the comparison groups. The level of detail in the data generated sheds new light on the cognitive processes and actions of burglars and how they “learn on the job.” Implications for criminal decision‐making perspectives and psychological theories of expertise are discussed.     

Single-item predictive validity of the Short-Term Assessment of Risk and Treatability (START) for violent behaviour in outpatient forensic psychiatry

The single-item predictive validity of the Short-Term Assessment of Risk and Treatability (START) has not been thoroughly investigated, although this has great clinical relevance for the selection of treatment targets. Furthermore, it remains unclear whether the characteristic START additions of scoring strengths next to vulnerabilities and selecting key items, add incremental predictive validity. Finally, predictive validity has primarily been studied in inpatient settings and included mainly patients with a psychotic disorder. We analysed data from a mixed diagnostic sample of 195 forensic psychiatric outpatients with a 3-month and 170 patients with a 6-month follow-up period, using logistic regression analysis. The occurrence of violent or criminal behaviour was established based on the case manager’s recordings in the patient’s file. Only 5 of the 20 START items were found to have predictive validity: Impulse Control, Attitudes, Material Resources, Rule Adherence and Conduct. The last three were the only items for which incremental predictive validity was found with respect to scoring it as a strength and a vulnerability. Selection of key items did not add to the predictive validity. While possibly having therapeutic significance, the scoring of strength next to vulnerability and the selection of key items, may not be beneficial for risk assessment.     

Establishing Trust in the Illegal Wildlife Trade in China

This study focusses on the role of trust in the illegal distribution of protected wildlife in China. This research attempts to contribute to the literature by disentangling the establishment of trust within the illegal wildlife trade based on ethnographic fieldwork between 2011 and 2016. Both traders and consumers are resorting to mechanisms of trust to foster exchange and to increase credibility of their agreements. This study discusses the existence of such mechanisms of trust within wildlife trafficking networks that are rather characteristic of illegal wildlife trade in China.

     

Regulating security on the Internet: control versus trust

ABSTRACT

This article focuses on the role of government in relation to cybersecurity. Traditionally, cybersecurity was primarily seen as a technical issue. In recent years, governments have realised that they, too, have a stake in securing the Internet. In their attempts to grapple with cybersecurity, governments often turn to technical solutions to ‘code away’ illegal or undesired behaviours. ‘Techno-regulation’ has become popular because it may seem to be an effective and cheap way of increasing control over end users’ behaviours and increasing cybersecurity. In this article, we will explain why using techno-regulation has significant downsides and, therefore, why it may be unwise to use it as a dominant regulatory strategy for securing the Internet. We argue that other regulatory strategies ought to be considered as well, most importantly: trust. The second part of this article explains that trust can be used as an implicit strategy to increase cybersecurity or as an explicit mechanism for the same goal.